← View Generic B2123 Guide
Severity: Medium
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Vehicle-Specific Guide
This guide is customized for your 2021 Honda PASSPORT
B2123: B2123: Power Window Relay Circuit Malfunction
on 2021 Honda PASSPORT
Fix Cost
$50 - $200
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
❌ No
Pro recommended
Your Vehicle
2021 Honda
PASSPORT
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Important for 2021 Honda PASSPORT Owners
Before starting repairs, verify which engine your 2021 Honda PASSPORT has. Check your VIN or engine code to ensure you order the correct parts.
📖 What Does B2123 Mean on 2021 Honda PASSPORT?
The power window relay circuit has malfunctioned, preventing the windows from functioning properly.
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Symptoms
- • Windows won't roll up or down
- • or do so intermittently
- • with no warning lights on the dashboard.
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Common Causes
- • Faulty power window relay
- • wiring issues
- • or a blown fuse.
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How to Fix B2123 on 2021 Honda PASSPORT
1. Check the fuse box for a blown fuse and replace it if necessary. 2. Inspect the wiring for damage or corrosion and repair/replace as needed. 3. Replace the power window relay if faulty.
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Need Maintenance Info for Your PASSPORT?
Get oil capacity, filter specs, and torque settings for your specific 2021 Honda PASSPORT.
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Essential Tool
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Related Diagnostic Codes
Other codes that may appear with B2123
B2121
Sequential Code
B2121: Climate Control Fan Motor Malfunction
Medium
B2122
Sequential Code
B2122: Door Locks Actuator Circuit Malfunction
Medium
B2124
Sequential Code
B2124: Seat Position Sensor Circuit Malfunction
Medium
B2125
Sequential Code
B2125: Turn Signal Lamp Malfunction
Medium
💡 Why These Codes Are Related:
- • Similar Issues: Same root cause or component failure
- • Related Problems: Often occur together due to system interactions
- • Sequential Codes: Progressive failure stages or multiple sensors
- • Same System: Components within the same automotive system